Operators at the Pilgrim Nuclear Power Plant say they manually shut down the plant Monday morning to investigate what they called a minor leak.

The shut-down took place at 5:45 a.m. Monday. The leak was associated with a pilot valve on one of the plant’s four safety relief valves.

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Entergy, the company that manages the plant, said technicians are investigating the cause.

Officials with Pilgrim Station said the plant was in a 'safe, stable condition' and 'there was no threat to public safety.'

Entergy said the plant will be restarted after an evaluation of the shutdown was conducted and any necessary repairs were made.

The shutdown comes just four days after the 685-megawatt plant came back online after being shut down for seven days. That Jan. 10 shutdown came after the failure of an electrical relay caused Pilgrim's two large water recirculation pumps to automatically turn off.